Auto merge of rust-lang#15880 - lnicola:vfs-toml, r=Veykril

internal: Include toml files in the vfs

Closes rust-lang#15753

Author: bors

crates/load-cargo/src/lib.rs

@@ -208,6 +208,7 @@ impl ProjectFolders {
             let entry = {
                 let mut dirs = vfs::loader::Directories::default();
                 dirs.extensions.push("rs".into());
+                dirs.extensions.push("toml".into());
                 dirs.include.extend(root.include);
                 dirs.exclude.extend(root.exclude);
                 for excl in global_excludes {